Astronomy Homework †Question and Answers

Astronomy Homework – Question and Answers Free Online Research Papers Astronomy Homework Question and Answers #1.What is comparative planetology? What is its basic premise? What are its basic primary goals? Comparative planetology is an approach to the study of different worlds in a solar system. The basic premise of it is that all bodies in our solar system are formed at about the same time from the same cloud of interstellar gas and dust, and in accord with the same physical laws. Therefore, we can study the word by comparing them with one another. By studying comparative planetology, we can begin to understand much more about the modern theory of formation that explains much of what we see. #8. Distinguish between metals, rocks, hydrogen compounds, and light gases in terms of condensation temperatures and relative abundances in the solar nebula. Metals include iron, nickel, aluminium, and other metals that are found on Earth. They are the least commen material, making up about .2%, and the typical condensation is between 1000-1600 K. Rocks are the materials usually found on the surface of the Earth, mostly silicon based minerals. Rocks typically melt and vaporize between 500-1300 K, and make up about .4% of the nebula’s mass. Hydrogen compounds are molecules including methane, ammonia, and water that are solidified into ices below 150 K. Hydrogen compounds make up a considerably larger mass of the nebula, about 1.4%. Light gases such as Hydrogen and Helium never condense under solar temperatures, and make up the remaining 98% of the nebula’s mass. #15. What clues suggest that a planetary satellite was captured instead of forming with its planet? Several unusual moon’s including Phobos and Deimos, are said to be captured asteroids instead of moons that formed when the planet did. Several reasons why is because they have ‘unusual’ orbits- they orbit opposite the rotation of their planet. Also, they do resemble asteroids, and are darker and lower in density then Mars. Problems #4. A solar system has 12 planets that all orbit the star in the same direction and in nearly the same plane. The 15 largest moons in this solar system orbit their planets in nearly the same plane as well. However, several smaller moons have highly inclined orbits around their planets. This would not be an uncommon solar system to find except for one fact. Most planets and moons do indeed lie in the same plane, and orbit in the same direction. However, It would be highly unusual to find moons with a high inclination of their orbits- all moons always lie on the same plane as the other moons. #9. Explain in terms a friend or roommate would understandable why the jovian planets are lower in density then the terrestrial planets even though they all formed from the same cloud. The reason that the Jovian planets are less dense is that they are made from less dense materials- the light gases and hydrogen compounds that make up the nebula. The other materials, Rocks and metals, make up the smaller terran planets, and because solids are denser then gases, the terrestrial planets are more dense. All planets are formed from the same cloud, but the four different materials in it do not have to be present in all the same amounts. Research Papers on Astronomy Homework - Question and AnswersRiordan Manufacturing Production PlanStandardized TestingAnalysis Of A Cosmetics AdvertisementResearch Process Part OneDefinition of Export QuotasBionic Assembly System: A New Concept of SelfMind TravelComparison: Letter from Birmingham and CritoThe Fifth HorsemanEffects of Television Violence on Children

Shopping in English Vocabulary

Shopping in English Vocabulary Use  polite questions  when shopping or helping a customer in a shop. Polite questions are asked with could, may, and would. You can also ask for advice in shops using should. Shopping for a Sweater Shop assistant: May I help you?Customer: Yes, Im looking for a sweater. Shop assistant: What size are you?Customer: Im an extra large. Shop assistant: Would you like a plain sweater or something else?​Customer: Im looking for a plain blue sweater. Shop assistant: How about this one?Customer: Yes, thats nice. Could I try it on? Shop assistant: Certainly, the changing rooms are over there.Customer: Thank you. (goes into a changing room to try on the sweater) Shop assistant: How does it fit?Customer: Its too large. Do you have a large? Shop assistant: Yes, here you are. Would you like to try it on to see if it fits?Customer: No thats Okay. Thank you. Ill take it. Im also looking for some nice slacks. Shop assistant: Great. We have some very nice wool slacks over here. Would you like to take a look?Customer: Yes, thanks for your help.   Shop assistant: What are your measurements?Customer: Im a 38 waist and a 32 inseam. Shop assistant: What do you think about these?Customer: Theyre nice, but Id prefer cotton trousers if you have them. Shop assistant: Certainly, our summer slacks collection is over here. How about these?Customer: Yes, I like those. Do you have them in grey as well? Shop assistant: Yes, heres a pair. You said you the measurements are 38 by 32, didnt you?Customer: Yes, thats correct. Ill go try them on. Shop assistant: Let me know if you need any help.​Customer: Thank you. (comes back) These are great. So, that makes one sweater and a pair of grey slacks. Shop assistant: ​OK, how would you like to pay?Customer: Do you take credit cards? Shop assistant: Yes, we do. Visa, Master Card, and American Express.Customer: OK, heres my Visa. Shop assistant: Thank you. Have a nice day!Customer: Thank you, goodbye. Key Vocabulary Phrases Could / May I help you?Could I try it (them) on?How does it fit?How would you like to pay?Im looking for...Id prefer... Words Changing roomsSize - extra small, small, medium, large, extra large - Used with standard measurementsMeasurements - used with specific measurements for trousers, suits, etc.  Shop assistant/store clerkTrousers/Slacks/PantsWaist  Inseam  Credit cards Quiz Provide the missing word to fill in the gaps to complete this conversation with a store clerk.   Store clerk: Hello, _____  I help you find anything?​Customer: Yes, Im looking _____  a blouse and some matching trousers. Store clerk: Great. What _____  would you like?Customer: Im _____  for a white blouse and black trousers. Theyre for an important job interview. Store clerk: Okay. Please follow me to the business apparel section.Customer: Thanks for your help. Store clerk:  Its my pleasure. Do you see anything you like?​Customer: Yes, that blouse looks nice. Store clerk: What _____  are you?​Customer: Im a small. Now, lets take a look at the pants. Store clerk: These are nice. Would you like to _____  them on?Customer: Do you have anything else? Store clerk: Yes, we also have these trousers.Customer: I like those, Ill try those _____  . Store clerk: What are your _____  ?Customer: I have a 26 waist and 32 inseam. Store clerk: Heres a pair. Would you like to try them on?Customer: Yes, wheres the _____  ? Store clerk: You can try them on over there.Customer: Thank you. (tries the clothing on, walks out of the changing room to show the store clerk) What do you think? Store clerk: You look fantastic! Im sure youll get that job!Customer: Thanks! Ill take them. Store clerk: Would you like to _____  by cash or by credit card?Customer: _____  , please. Heres my visa card. Store clerk: Thank you. That will be $145. Answers May/could/canForColorSizeTryOnMeasurementsChanging roomPayCredit card